Subversion Repositories slepc-dev

/*
  This file contains the Fortran version of SlepcInitialize().
*/

#include "zpetsc.h"
#include "slepc.h"
#include "slepcst.h"
#include "slepceps.h"

extern PetscTruth SlepcBeganPetsc;

static PetscTruth SlepcInitializeCalled=PETSC_FALSE;

#ifdef PETSC_HAVE_FORTRAN_CAPS
#define petscinitialize_              PETSCINITIALIZE
#define slepcinitialize_              SLEPCINITIALIZE
#elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE)
#define petscinitialize_              petscinitialize
#define slepcinitialize_              slepcinitialize
#endif

EXTERN_C_BEGIN
extern void PETSC_STDCALL petscinitialize_(CHAR filename PETSC_MIXED_LEN(len),PetscErrorCode *ierr PETSC_END_LEN(len));
EXTERN_C_END

#if defined(PETSC_USE_DYNAMIC_LIBRARIES)
extern PetscDLLibraryList DLLibrariesLoaded;
#endif

EXTERN_C_BEGIN
/*
    SlepcInitialize - Version called from Fortran.

    Notes:
    Since this routine is called from Fortran it does not return error codes.
*/
void PETSC_STDCALL slepcinitialize_(CHAR filename PETSC_MIXED_LEN(len),int *ierr PETSC_END_LEN(len))
{
#if defined(PETSC_USE_DYNAMIC_LIBRARIES)
  char       libs[PETSC_MAX_PATH_LEN],dlib[PETSC_MAX_PATH_LEN];
  PetscTruth found;
#endif
  *ierr = 1;
  if (SlepcInitializeCalled) {*ierr = 0; return;}

  if (!PetscInitializeCalled) {
#if defined(PETSC_HAVE_FORTRAN_MIXED_STR_ARG)
    petscinitialize_(filename,len,ierr);
#else
    petscinitialize_(filename,ierr,len);
#endif
    if (*ierr) { (*PetscErrorPrintf)("SlepcInitialize:PetscInitialize failed");return;}
    SlepcBeganPetsc = PETSC_TRUE;
  }

#if defined(PETSC_USE_DYNAMIC_LIBRARIES)
  *ierr = PetscStrcpy(libs,SLEPC_LIB_DIR);if (*ierr) return;
  *ierr = PetscStrcat(libs,"/libslepc");if (*ierr) return;
  *ierr = PetscDLLibraryRetrieve(PETSC_COMM_WORLD,libs,dlib,1024,&found);if (*ierr) return;
  if (found) {
    *ierr = PetscDLLibraryAppend(PETSC_COMM_WORLD,&DLLibrariesLoaded,libs);if (*ierr) return;
  } else {
    *ierr = 1;
    (*PetscErrorPrintf)("Unable to locate SLEPc dynamic library %s \n You cannot move the dynamic libraries!\n or remove USE_DYNAMIC_LIBRARIES from ${PETSC_DIR}/bmake/$PETSC_ARCH/petscconf.h\n and rebuild libraries before moving\n",libs);
    return;
  }
#else
  *ierr = STInitializePackage(PETSC_NULL); if (*ierr) { (*PetscErrorPrintf)("SlepcInitialize:Initializing ST package");return;}
  *ierr = EPSInitializePackage(PETSC_NULL); if (*ierr) { (*PetscErrorPrintf)("SlepcInitialize:Initializing EPS package");return;}
#endif

  SlepcInitializeCalled = PETSC_TRUE;
  *ierr = PetscVerboseInfo((0,"SlepcInitialize: SLEPc successfully started from Fortran\n"));
  if (*ierr) { (*PetscErrorPrintf)("SlepcInitialize:Calling PetscVerboseInfo()");return;}

}  

EXTERN_C_END